<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="100px">
      <el-form-item label="知识库" prop="knowledgeName">
        <el-input
          v-model="queryParams.knowledgeName"
          placeholder="请输入知识库的名字"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:knowledge:add']"
        >新增</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="knowledgeList" @selection-change="handleSelectionChange">
      <el-table-column label="序号" type="index" align="center">
        <template slot-scope="scope">
          <span>{{(queryParams.pageNum - 1) * queryParams.pageSize + scope.$index + 1}}</span>
        </template>
      </el-table-column>
      <el-table-column label="知识库ID" align="center" prop="klId" width="80"/>
      <el-table-column label="知识库名称" align="center" prop="knowledgeName" />
      <el-table-column label="描述" align="center" prop="description" />
      <el-table-column label="文档数量" align="center" prop="docCount" />
      <el-table-column label="文档大小(字节)" align="center" prop="docSize" />
      <el-table-column label="创建时间" align="center" prop="createdAt" width="100">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createdAt, '{y}-{m}-{d} {h}:{i}:{s}') }}</span>
        </template>
      </el-table-column>
      <el-table-column label="更新时间" align="center" prop="updatedAt" width="100">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.updatedAt, '{y}-{m}-{d} {h}:{i}:{s}') }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-upload2"
            @click="importDoc(scope.row)"
            v-hasPermi="['system:knowledge:edit']"
          >导入文档</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:knowledge:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:knowledge:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改存储知识库对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="100px">
        <el-form-item label="知识库名称" prop="knowledgeName">
          <el-input v-model="form.knowledgeName" placeholder="请输入知识库的名字" />
        </el-form-item>
        <el-form-item label="描述" prop="description">
          <el-input v-model="form.description" placeholder="请输入知识库的描述" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
    <!-- 用户导入对话框 -->
    <el-dialog :title="docUpload.docTitle" :visible.sync="docUpload.docOpen" width="400px" append-to-body>
      <el-upload
        ref="docUpload"
        :limit="1"
        :headers="docUpload.headers"
        :before-upload="handleBeforeUpload"
        accept=".txt, .pdf, .doc"
        :action="docUpload.docUrl + '?klId=' + docUpload.klId"
        :disabled="docUpload.isUploading"
        :on-progress="handleFileUploadProgress"
        :on-success="handleFileSuccess"
        :auto-upload="false"
        drag
      >
        <i class="el-icon-upload"></i>
        <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
        <div class="el-upload__tip text-center" slot="tip">
          <span>仅允许导入txt、pdf、doc格式文件。</span>
        </div>
      </el-upload>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitFileForm">导 入</el-button>
        <el-button @click="docUpload.docOpen = false">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listKnowledge, getKnowledge, delKnowledge, addKnowledge, updateKnowledge } from "@/api/knowledge/api.js";
import { getToken } from "@/utils/auth";

export default {
  name: "Knowledge",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 存储知识库表格数据
      knowledgeList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        knowledgeName: null,
        description: null,
        createdAt: null,
        updatedAt: null,
        createdBy: null,
        updatedBy: null
      },
      // 表单参数
      form: {},
      // 用户导入参数
      docUpload: {
        // 是否显示弹出层（用户导入）
        docOpen: false,
        // 是否禁用上传
        isUploading: false,
        // 弹出层标题（用户导入）
        docTitle: "",
        // 设置上传的请求头部
        headers: { Authorization: "Bearer " + getToken() },
        // 上传的地址
        docUrl: process.env.VUE_APP_BASE_API + "/knowledge/documents/importData"
      },
      // 表单校验
      rules: {
        knowledgeName: [
          { required: true, message: "知识库的名字不能为空", trigger: "blur" }
        ],
        description: [
          { required: true, message: "知识库的描述不能为空", trigger: "blur" }
        ],
        createdBy: [
          { required: true, message: "创建人的ID不能为空", trigger: "blur" }
        ],
        updatedBy: [
          { required: true, message: "更新人的ID不能为空", trigger: "blur" }
        ]
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询存储知识库列表 */
    getList() {
      this.loading = true;
      listKnowledge(this.queryParams).then(response => {
        this.knowledgeList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        klId: null,
        knowledgeName: null,
        description: null,
        createdAt: null,
        updatedAt: null,
        createdBy: null,
        updatedBy: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.klId)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加存储知识库";
    },
    importDoc(row){
      this.docUpload.docOpen = true
      this.docUpload.docTitle = "文档导入";
      this.docUpload.klId = row.klId;
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const klId = row.klId || this.ids
      getKnowledge(klId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改存储知识库";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.klId != null) {
            updateKnowledge(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addKnowledge(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const klIds = row.klId || this.ids;
      this.$modal.confirm('是否确认删除存储知识库编号为"' + klIds + '"的数据项？').then(function() {
        return delKnowledge(klIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('system/knowledge/export', {
        ...this.queryParams
      }, `knowledge_${new Date().getTime()}.xlsx`)
    },
    // 提交上传文件
    submitFileForm() {
      this.$refs.docUpload.submit();
    },
    // 上传前校检格式和大小
    handleBeforeUpload(file) {
      // 校检文件大小
      const isLt = file.size / 1024 / 1024 < 5;
      if (!isLt) {
        this.$message.error(`上传文件大小不能超过 5MB!`);
        return false;
      }
      return true;
    },
    // 文件上传成功处理
    handleFileSuccess(response, file, fileList) {
      this.docUpload.docOpen = false;
      this.docUpload.isUploading = false;
      this.$refs.docUpload.clearFiles();
      this.$message.success(`文档上传成功!`);
      this.getList();
    },
  }
};
</script>
